Three Kingdoms: I Have Millions of Acres of Genetically Modified Potatoes

Liu Heng, an unlucky young man in the 21st century, traveled through the Three Kingdoms after being gored to death by a wild boar, awakened the Shennong System, and planted tens of thousands of acres of genetically modified potatoes. With potatoes, he pacified the Yellow Turbans, fought for hegemony in the Three Kingdoms, and helped the Han Dynasty. But, now that we have traveled through time, how can we only help the Han Dynasty? !